.ourposition{ width:100%; height:680px; position:relative; min-width:1280px;overflow: hidden;}

.banner_container{height: 680px;width: 100%;display: block;z-index: 0}
.banner_container .banner_content{position: absolute;left: 0%;top: 0%;width: 100%;height: 100%;overflow: hidden;z-index: 0}
.banner_container .banner_content img{z-index: 3}
.power_pic{width:1180px; height:600px;display:block; margin:0 auto; position:relative; top:86px;}

.bnav_con{ position:absolute;left:0; top:90px; width:100%;z-index: 4;}
.tabline{ position:absolute; top:90px; left:0; width:100%; height:1px; background:rgba(255,255,255,0.2);filter: progid:DXImageTransform.Microsoft.gradient(startcolorstr=#2bffffff,endcolorstr=#2bffffff);z-index: 999;}
.banner_nav{position: absolute;z-index: 10;bottom:-18px;left: 50%;margin-left: -104px;}
.banner_nav li{float: left;width:70px;height:100px;}
.banner_nav li a{float: left;width: 70px;height: 100px;text-align: center;line-height: 20px;font-size: 0px;cursor: pointer;}
.banner_nav li a p{ width:70px; height:70px;  font-size:16px; line-height:70px; text-align:center; color:#fff;font-weight:bold; opacity:0.5;}
.banner_nav li a i{ display:block; width:24px; height:24px; background:url(../images/slico3.png) no-repeat; margin:0 auto;}
.banner_nav li.current a p{background:url(../images/slico1.png) no-repeat;_background:none;_filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(sizingMethod=crop,src='../images/slico1.png'); color:#fff;opacity:1}
.banner_nav li.current a i{ background:url(../images/slico2.png)}
.prove_index,.next_index{background:url(../images/arrow.png);top:50%;height:35px;width:54px;position:absolute;margin-top:-23px;z-index:15;cursor:pointer;}
.prove_index{left:20px;background-position:-7px 0; display:none;}
.next_index{right:20px;background-position:65px 35px; display:none;}
.prove_index:hover{background:url(../images/arrow.png);background-position:-79px 0px;}
.next_index:hover{background:url(../images/arrow.png);background-position:-7px 35px;}